A total of 10 homemade bombs have been sent to celebrities and politicians who have been outspoken critics of President Donald Trump in the last five days.

Actor Robert De Niro and former vice president Joe Biden were the latest targets in the string of pipe bombs, which were reportedly sent through the mail, according to the Washington Post.

Other homemade explosive devices have been addressed to Barack Obama, Hillary Clinton, CNN, George Soros, Cory Booker, James Clapper, and others.

A law enforcement source said that DNA evidence on one of the devices played a part in leading investigators to the suspect. Authorities also said that a latent fingerprint on a package addressed to Democratic Rep. Maxine Waters of California played a part in the investigation.

A picture believed to be of a van seized by authorities in the package bomb investigation shows a sticker with crosshairs around former Secretary of State Hillary Clinton's face, according to CBS News.

Court records show Sayoc, an amateur body builder with social media accounts that denigrate Democrats and praise Trump, has a history of arrests for theft, illegal steroids possession and a 2002 charge of making a bomb threat.

There has been some speculation that the devices were hoaxes or so poorly constructed that they would not explode. Law enforcement officials from multiple federal agencies repeatedly said Friday afternoon at a press conference that the devices were real. Each device was made up of a PVC pipe, a small clock, battery, wiring and “energetic material,” FBI Director Christopher Wray said. And he stressed that they could have exploded under the right conditions.

Sayoc was charged with five federal counts: interstate transport of explosives, mailing of explosives, threats against a former president, making threatening interstate communications and assault of current or former officials. He faces up to 58 years in prison if convicted of these charges.

Patrol

According to Fox News, 30-year-old Officer Sean Tuder was shot and killed on Sunday afternoon as a group of officers attempted to arrest 19-year-old Marco Perez, who had reportedly faked his own kidnapping to avoid being taken to jail earlier in the week.

Three suspects fleeing police after a residential burglary attempted to navigate their vehicle between the right shoulder barrier and a box truck in the right-hand lane of a Southern California freeway and found themselves pinned between the two immovable objects.

At the beginning of the memorial service for Officer Natalie Corona—the 22-year old officer with the Davis (CA) Police Department who was ambushed and murdered on January 10—the thousands of mourners were surprised when country star Billy Ray Cyrus sat before a microphone and sang a song in her honor.

Mississippi Governor Phil Bryant said on Friday that his state is nearing the point where declaring a disaster may be considered in order to ensure that there are enough troopers on the road to save the lives of individuals involved in traffic collisions on the freeways.

The Kutztown Borough (PA) Police Department received thousands of responses to a request posted to Facebook for three citizen volunteers to help officers in training. The training in question was to help officers learn how to administer Standardized Field Sobriety Tests during suspected DUI traffic stops, and the volunteers would have to be willing to let the department get them drunk.

The school principal and school superintendent who sparked national outrage when they had the school resource officer assigned to the campus escorted off the premises after he ticketed the principal for being illegally parked have each made an attempt to make amends.